Lead Screws Types:
Power screws are a common means of translating rotary motion into linear motion. There are several different types, each of which has its own advantages and disadvantages depending on the requirements of the application. Acme lead screws are defined by their thread profile, which is trapezoidal with a thread angle of 29°.
There are two immediate results of this difference in profile. It is much easier to machine, so Acme lead screws are much cheaper than square lead screws or ball screws. The second difference is a much larger area of contact between the screw and the nut. This has both advantages and disadvantages.
First, the load capacity is much higher. Second, there is much higher friction, which makes them much less efficient, but also prevents them from back-driving in most situations. So due to overheating and low efficiency, they are ill-suited for continuous power applications, but are great for vertical motion applications where the load must be suspended without dropping, like lifts and jacks. They are also suitable for medical lab automation and treatment devices, screw press drives, support legs and micro lathes.
Advantages to Acme Lead Screws:
Materials and Mating Nuts:
- Cost Effective
- Large contact area between the screw and nut resulting in:
- High load capacity
- Prevents back-driving
- Well suited for vertical motion applications
Our Acme lead screws are made of durable, high-quality stainless steel. Unlike electroplating, the anti-corrosive properties of stainless steel are not subject to frictional wear, which makes these lead screws ideal for corrosive environments. Acme lead screws are an adaptable, cost-effective solution to many linear motion applications, so to ensure that you get exactly what you need, we offer a variety of sizes and number of starts, as well as various styles of mating nuts.
- Bronze nuts have the highest load capacity, but require lubrication.
- Acetal nuts are very low friction, and therefore provide a higher efficiency.
- Turcite® (Acetal, PTFE & Silicone Filled) offers exceptionally long operating life due to excellent wear characteristics.
Anti-backlash nuts are also available.
We can even perform secondary operations on your lead screw, finishing ends to fit a bearing or motor so that it works perfectly
with your design.
Also Available: Metric Ball Screws and Nuts
BUY NOW - Metric Ball Screws
BUY NOW - KM Series Ball Nuts and Mounts
BUY NOW - Series 1 Ball Nut
- High Life Expectancy
- Excellent Cost Performance
- Produce greater than 90% efficiency in coverting rotary to linear motion.
- Machined screws are designed to be held by a double bearing on one side and on the other side by either a floating bearing, or no bearing and a guiding ball nut.